diff options
Diffstat (limited to 'pyparsing/core.py')
| -rw-r--r-- | pyparsing/core.py | 44 |
1 files changed, 25 insertions, 19 deletions
diff --git a/pyparsing/core.py b/pyparsing/core.py index d9f277c..f24369c 100644 --- a/pyparsing/core.py +++ b/pyparsing/core.py @@ -54,7 +54,7 @@ str_type = (str, bytes) # __version__ = "3.0.0a1" -__versionTime__ = "24 Feb 2020 02:17 UTC" +__versionTime__ = "30 Mar 2020 00:24 UTC" __author__ = "Paul McGuire <ptmcg@users.sourceforge.net>" @@ -130,9 +130,12 @@ hexnums = nums + "ABCDEFabcdef" alphanums = alphas + nums printables = "".join(c for c in string.printable if c not in string.whitespace) +_trim_arity_call_line = None + def _trim_arity(func, maxargs=2): "decorator to trim function calls to match the arity of the target" + global _trim_arity_call_line if func in singleArgBuiltins: return lambda s, l, t: func(t) @@ -148,11 +151,16 @@ def _trim_arity(func, maxargs=2): # synthesize what would be returned by traceback.extract_stack at the call to # user's parse action 'func', so that we don't incur call penalty at parse time - LINE_DIFF = 7 + LINE_DIFF = 11 # IF ANY CODE CHANGES, EVEN JUST COMMENTS OR BLANK LINES, BETWEEN THE NEXT LINE AND # THE CALL TO FUNC INSIDE WRAPPER, LINE_DIFF MUST BE MODIFIED!!!! - this_line = traceback.extract_stack(limit=2)[-1] - pa_call_line_synth = (this_line[0], this_line[1] + LINE_DIFF) + _trim_arity_call_line = ( + _trim_arity_call_line or traceback.extract_stack(limit=2)[-1] + ) + pa_call_line_synth = ( + _trim_arity_call_line[0], + _trim_arity_call_line[1] + LINE_DIFF, + ) def wrapper(*args): nonlocal found_arity, limit @@ -161,25 +169,23 @@ def _trim_arity(func, maxargs=2): ret = func(*args[limit:]) found_arity = True return ret - except TypeError: + except TypeError as te: # re-raise TypeErrors if they did not come from our arity testing if found_arity: raise else: - try: - tb = sys.exc_info()[-1] - if not extract_tb(tb, limit=2)[-1][:2] == pa_call_line_synth: - raise - finally: - try: - del tb - except NameError: - pass + tb = te.__traceback__ + trim_arity_type_error = ( + extract_tb(tb, limit=2)[-1][:2] == pa_call_line_synth + ) + del tb - if limit <= maxargs: - limit += 1 - continue - raise + if trim_arity_type_error: + if limit <= maxargs: + limit += 1 + continue + + raise # copy func name to wrapper for sensible debug output func_name = "<parse action>" @@ -1655,7 +1661,7 @@ class ParserElement: continue if not t: continue - out = ["\n".join(comments), t] + out = ["\n" + "\n".join(comments) if comments else "", t] comments = [] try: # convert newline marks to actual newlines, and strip leading BOM if present |